Fatal error: Uncaught Error: Class "MediaWiki\Extension\Gadgets\GadgetRepo" not found in C:\xampp\htdocs\extensions\Gadgets\includes\MediaWikiGadgetsJsonRepo.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\Gadgets\includes\MediaWikiGadgetsJsonRepo.php on line 22